What was Jessica Simpson's pre-wedding diet?

Jessica Simpson is married and looking more amazing than she did pre-motherhood. Though the singer/actress/fashion designer has credited Weight Watchers with her past weight loss, a source claims that Simpson's fabulous wedding body comes from cutting out all animal products, according to Us Weekly.

"Jessica did a vegan diet for about two weeks leading up to the wedding," an inside source told Us. Before her July 5 nuptials to Eric Johnson, the entertainer "also got quite a few B12 shots," said the source. In addition to eating plenty of vegetables, Simpson got a healthy glow by having "sugar dermabrasion on her face," according to the insider who added that sugar was chosen over salt dermabrasion because it is a less-harsh option.

While an entirely plant-based diet may seem radical for most people, if Simpson's hot bod serves as an any indication, the method certainly seems to work. The songstress has battled with her weight ever since 2005, when she famously flaunted toned legs in jean shorts as Daisy Duke in The Dukes of Hazzard. Though she utilized the services of Weight Watchers and even served as their spokesperson, Simpson fought to stay trim before and after giving birth to her daughter, Maxwell, and son, Ace. However, Simpson emerged victorious this past spring and has celebrated her once-again glorious figure by posting photos of herself on Instagram.

The "I Wanna Love You Forever" singer is not the first celeb to hop on the vegan train. Last December, Jay Z and Beyoncé pledged to go vegan for a 22-day challenge during the holidays. Jay Z claimed that going vegan was easier than he thought and said on his blog that "you can call it a spiritual and physical cleanse... I don't know what happens after Christmas. A semi-vegan, a full plant based diet? Or just a spiritual and physical challenge? We'll see... best of luck and health!"